Top 10 Malware Threats To Microsoft PCs

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Backdoor Trojans are used by cybercriminals to infect computers and control them as part of a botnet of infected machines. Dorkbot, an increasingly detected worm that spreads through removable drives, has a backdoor component, Microsoft said. The Ramnit Trojan, which has been detected stealing FTP credentials, also has backdoor functionality. Typically the malware infection attempts to contact a remote command-and-control server for instructions from the attacker or to download additional malware.